TC811 查看數據表（PDF） - TelCom Semiconductor Inc => Microchip

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TC811

3-1/2 DIGIT A/D CONVERTER WITH HOLD AND DIFFERENTIAL REFERENCE INPUTS

TelCom Semiconductor Inc => Microchip 

TC811

PIN DESCRIPTION

Pin No.

40-Pin Plastic DIP

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

Symbol

HLDR

D1

C1

B1

A1

F1

G1

E1

D2

C2

B2

A2

F2

E2

D3

B3

F3

E3

AB4

POL

BP

G3

A3

C3

G2

V–

VINT

VBUFF

CAZ

VIN–

VIN+

COM

VREF–

CREF–

CREF+

VREF+

TEST

V+

OSC2

OSC1

3-1/2 DIGIT A/D CONVERTER WITH HOLD AND

DIFFERENTIAL REFERENCE INPUTS

Description

Hold pin, logic 1 holds present display reading.

Activates the D section of the units display.

Activates the C section of the units display.

Activates the B section of the units display.

Activates the A section of the units display.

Activates the F section of the units display.

Activates the G section of the units display.

Activates the E section of the units display.

Activates the D section of the tens display.

Activates the C section of the tens display.

Activates the B section of the tens display.

Activates the A section of the tens display.

Activates the F section of the tens display.

Activates the E section of the tens display.

Activates the D section of the hundreds display.

Activates the B section of the hundreds display.

Activates the F section of the hundreds display.

Activates the E section of the hundreds display.

Activates both halves of the 1 in the thousands display.

Activates the negative polarity display.

Backplane drive output.

Activates the G section of the hundreds display.

Activates the A section of the hundreds display.

Activates the C section of the hundreds display.

Activates the G section of the tens display.

Negative power supply voltage.

Integrator output, connection for CINT.

Buffer output, connection for RINT.

Integrator input, connection for CAZ.

Analog input low.

Analog input high.

Analog Common: Internal zero reference.

Reference input low.

Negative connection for reference capacitor.

Positive connection for reference capacitor.

Reference input high.

All LCD segment test when pulled high (V+).

Positive power supply voltage.

Crystal oscillator output.

Crystal oscillator input.

3-140

TELCOM SEMICONDUCTOR, INC.

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